Vehicle brake



Aug. 25, 1925.

1,550,833 R. J. MEYERS VEHI CLE' BRAKE Filed Sept. 24, 1924 BOY J. IICEYEBS, OF HOLLYWOOD, CALIFORNIA.

VEHICLE BRAKE.

Application filed. September 24, 1924.

To all whom it may concern:

Be it known that 1, Roy J. Mnxnns, a citizen of the United States, residing at Hollywood, Calif, in the county of Los Angeles and State of California, have invented new and useful Improvements in Vehicle Brakes, of which the following is a specification.

My invention relates to vehicle brakes constructed primarily for use on automobiles.

The principal object of my invention is to provide a Wheel brake construction embody ing a brake drum in which the brake contacting surface of the brake drum runs in oil thereby preventing excessive heating of the parts and obviating the use of brake linings.

Another object of my invention is to provide an efficient brake construction enclosed in a casing adapted to be secured to the wheel of a vehicle.

A further object of my invention is to provide an eficient bralze construction enclosed in a casing adapted to hold oil, and provided with means for preventing the es cape of oil therefrom.

With the foregoing objects in View, together with such other objects and advantages as may subsequently appear, my invention resides in the parts and in the construction, combination and arrangement of parts, or their equivalents, hereafter described and claimed and illustrated by way of example in the accompanying drawings, in which 2- Figure 1 is a view partly in vertical section of a wheel embodying my improved brake construction used in conjunction with hydraulic operating means.

Figure 2 is a view of the brake construction taken on line 2-2 of Figure 1.

Figure 3 is a sectional view showing my invention used in conjunction with mechanical operating means; and

Figure 4 is a view partly broken away taken on line d-4= of Figure 3.

Referring now more specifically to the drawings particularly Figures 1 and 2.

A brake drum comprising a cylindrical brake engaging metal wall 1 formed integral with an inner disc-shaped wall 2 is secured to the inner side of the disc 3 of an automobile disc wheel 4 by means of bolts 5 passed through said inner drum wall and through the disc of said wheel, a strengthening plate 6 is disposed on the outer side of said wheel Serial No. 739,49.

disc 3, and the said inner drum wall 2 wheel disc 3 and strengthening plate 6 are rigidly held together by means of nuts 7 threaded to said bolts 5.

The inner drum wall 2 is formed with a boss 8 disposed internally of the drum, which boss is keyed at 9 to an automobile axle 10 revoluble in the axle housing 11 by suitable means not shown. A nut 12 is threaded to the end of the axle 10 so as to hold the wheel thereon. The cylindrical brake-engaging metal wall 1 of the brake drum is provided with lugs 13 on the inner side thereof to which lugs are secured the outer casing plate 14 which fits snugly against an annular ledge 15 formed in the edge of the cylindrical brake wall 1 and is held in place thereto by means of bolts 16 passed through said casing plate 1% and threaded to said lugs 13.

The casing plate 14 is centrally cut away so as to permit said plate 1 1 to ride around the axle housing flange 17. A11 annular L- shaped flange 18 is formed around the edge of said casing plate 1 1 contiguous to said axle housing flange 17, and is disposed internally of the brake drum, the function of which flange is hereafter more fully explained.

A brake supporting bracket plate 19 disposed within the brake drum is centrally bored to seat over the axle 10 and is rigidly secured to the innerside of the axle housing 1'1 ange 17 by means of bolts 20. Said bracket plate 19 is provided with a depending lug 21 which supports a substantially cylindrical open ended brake band 22, which brake band is provided with a bracket 23 disposed intermediate its length on the inner side thereof and to which bracket the lower end of said lug is secured by means of the bolt 24;.

The upper edge of said bracket plate 19 is provided with an extension formed in the shape of a split tongue 25 adapted to rigidly support a cylinder 26 in which reciprocates a piston 27 To the upper end of the piston is pivoted a pair of similar shaped adjustable links 28 and 29, respectively, which links are connected one each to brackets 30 and 31 secured to the open ends of the brake band 22. The link 28 is pivoted by means of the bolt 32 to the bracket 30, and the link 29 is pivoted to the bracket 31 by means of the bolt 83. A pipe lead 342 leading from the hydraulic power source of Various modifications may be made in my supply (not shown) passes through the axle construction without departing from the housing 17 and is connected to the lower spirit of the invention and I do not wish end of the cylinder 26 below the piston 27. to be limited to the exact device as shown, The outer casing plate 14 is provided with but claim as within the scope of my invenan opening 316 near the flange 18 to permit tion all forms readable on claims that will the oil 37 to be inserted into the brake drum. be finally allowed on this application.

A stopper 38 normally closes said opening. Having described my invention, what I Fluid pressure exerted on the underside claim and desire to secure by Letters Patent of the piston 27 causes it to rise in the cylof the United States of America is inder 26 thereby forcing the links 28 and 1. In a brake construction adapted to be 29 apart incidently causing the outer edge of secured to, awjvheel and axle housing of a he brake band 22 to engage the inner survehicle, the combination? of a brake drum "face of the cylindrical metal wall 1 to form comprising a cylindrical brake band contactthe brake. A spiral spring 35 is secured to ing wall, an inner disc-shaped wall and an and between the brake end brackets 30 and outer wall, said outer wall centrally bored 31 so as to disengage the brake band 22 from so as to revolve around and adjacent to the contact with the drum when the pressure is axle housing or said vehicle, means for seremoved from the piston 27. In Figures 3 curing said brake drum to one of the wheels and 4 I have shown my device embodied in of said vehicle, and a brake band operable a brake construction using mechanical actuwithin said brake drum, said brake band seating means. cured to the axle housing of said vehicle.

A brake rod 39 is provided with a cam L0 2. In a brake construction adapted to be secured to the end thereof which cam recipsecured to a wheel and axle housing of a verocates the piston 41 on the rotation of said hicle, thecombinat-ion of a brake drum combralre rod The piston 11 is provided prising a cylindrical brake band contacting with a pair of vertical grooves 42 in which wall, an inner disc-shaped wall and an outer fit the opposing inner edges of the split wall, said outer wall centrally bored so as tongue 43 so as to hold said piston in place to revolve around and adjacent to the axle and to permit Said Piston to be ertically llOuSlIlg Of Stud Vehlcle, means for Secllrlng guided thereby. said brake drum to one of the wheels of said Referring now to the operation of my invehicle, a brake band operable within said vention brake drum, said brakeiband secured to the When the vehicle is running the centrifaxle 11 01 ing of s id vehicle, means for inugal notio nwgivenste their)i l 37 by theIo'ta serting oil 'i'iaoaia'brake"drum and an antion 0' ie brake drum causes the brake nular flange on the outer wall of said drum band 22 to be continually covered in oil and adjacent the axle housing of said vehicle for the peculiar construction and positioning of preventing the escape o t oil from said brake the flange 18 prevents the escape of oil from drum. a

the brake drum. ROY J. MEYERS. 

